Why do inlet radiator hoses (lower) usually have a spiral steel wire molded into them?

What will be an ideal response?


To prevent collapse due to the suction action of the coolant pump impeller

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Electrical contractors typically employ _____.

a. commercial electricians b. electrical inspectors c. maintenance electricians d. E&I technicians

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Technician A says that when a CNG commercial vehicle is serviced in a facility not specifically designed for NG vehicles, 50% of the roll-up doors must be raised at least 12-inches (25cm) from the ground. Technician B says that when a CNG commercial vehicle is serviced in a facility not specifically designed for NG vehicles, the extraction and ventilation system must be turned on a be capable of exchanging 5 times the total shop volume of air per hour. Who is correct??

A. ?Technician A only B. ?Technician B only C. ?Both A and B D. ?Neither A nor B

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The refrigerant lines for single zone mini-split air conditioners are usually connected by:

A) Brazed connections. B) Reflok fittings. C) SAE compression fittings. D) Flare fittings.

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The device that is used on refrigeration systems to keep moisture from forming on cabinet surfaces is called a(n) ____________________.

Fill in the blank(s) with the appropriate word(s).

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